Has anyone tried this and have any input on it? I am just looking for something that will work for Rolyx until I can get him trained better to walk on the leash...he pulls, very hard and it hurts my arm/shoulder a lot. I have used a head halti and halti harness and though it cuts it down, it still hurts quite a bit. The canny looked like it may be a little more effective because it corrects directly under the head, rather than allowing too much pull from the side like the head haltis. He is also learning to turn his body slightly to the side giving himself more leverage. I have also tried walking and stopping, which does nothing....I think that'll improve over time when he gets better at focusing on me, but for now I am just looking for something to use so he doesn't have to miss out on his walks and won't hurt me in the process. Thanks!